Dump-car



N. EKBEHGI DUMP CAR.

APPLICATION FILED IvIAII.24. 192|.

1 ,$387,968. Patented Aug. 16, 1921.

N. EKBERG.

DUMP CAR. APPLICATION FILED MAR. 24. |921: 1,387,968. PatentedAug. 16,1921.

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' UNITED STAT Es PATENT OFFICE.

\ i NELS EKBERG, OF ST..PAL, MINNESOTA.

DUMP-cnn. n 'y 1,387,968 Specification of Letters Patent. Patented Aug', 16,' 192.1,

Y Application mea March 24, 1921. serial No. 455,079.

To all 'whom z' 'may concer/n: Be it known that I, NnLs EKBERG, a citizen of the United States, residing rat St. Paul, in the county of Ramsey and State of Minnesota, have invented' a new and useful Dump-Car, of which the following is a specifcation.

My invention relates to dump ycars of the class riding on a track andV employed for hauling and dumping earth, either for the purpose of leveling down some hill or for filling up someplace that is Atoo low; and

' the main object is toprovideY a` dump car of such improved construction that it will reuire no side doors to be opened during the umping and that the car body Aduring the dumping will move laterally outward and thus dump the earth some distance away from the track.

This and other objects .I attain bythe novel construction and arrangement of parts illustrated in the accompanying drawing, in

Vwhich:- Y

Figure 1 is a side elevation of my improved dump .car shown as standing on a track.

Fig. 2 is an end elevation 'of Fig. 1Y showing in dotted line also the car body in dumped position. y

Fig. 3 is an enlarged topi View of the'right hand end portion of the carin Fig.'1 with the chain omitted.

Fig. 4 is an elevation of Figf with the chain restored. v

Fig. 5 is a sectional elevation of the rolling gear and rack supporting the dump car as on line 5-5 in Fig. 6. l

Fig. 6 is a section on line 6-6 in Fig. 5.

Fig. 7 is an enlarged section on line 7-7 in Fig. 4. Fig.' 8 is a ysection on line 8-8 in Fig. 3. Y

Referring to the drawings by reference numerals, 1 designates the ties and 2 the rails of a track upon which roll the regular flanged supporting wheels 3 of a truck frame 4 having journal bearings for vthe axles 6 of the wheels.

Secured upon the frame-4 are timbers or other` longitudinal bars 7 to which the draft bars (not shown) are secured. Secured upon the bars 7 are two transversely-disposed supporting racks 8, one near each end of the truck, andon a long car there may be a similar support 8a without rack teeth and with a blank supporting segment 8" resting on it car body 9. Said body is further'supported and guided by two toothed sectors or mutilated gears 10, secured at 11 up under the car body or box and having fixed in them short shafts 12, which are guided. in horizontal slots 13 in vertical lianges 14 projecting up from/the sides of the racks 8. Y

The Vcar body`9 is dished mental in crossl section, and being made o sheet'metal it is stiffened by transverse bracing bars 15 and longitudinal bars 16 and 17. The latter bars, one at each side of the car, arey each ypreferably made of channel iron turned with lits liang-es 18 and`19 outward.

A Pivotally secured to each of said bars 17 are three legs 20 whose lateral swinging movement is limited by theircontact with the 19. To the lower ends of said flanges 18 and three legs is secured a foot bar 21, prefer- "ably madeupy of two angle bars as shown in Fig. 2. Said foot rails 21 when the car is being dumped get incontact with the ties 1 of the track and thereby prevent injurious strain on the car body and itsconnection with the truck. The ends of bar21 are runner shaped to prevent their engagement with the ties or the ground. 21x are-braces to resistfendwise pressure on the rails 21.

The car body is held in standing position andY released therefrom by the yfollowing means: Each end of thecar has a chain 22 extending across-the end of the truck and is there guided by two flanged pulleys 23 mounted on short shafts 23a in `metal frames 23b (see Figs. 4 and 7 and'held stretched by a rolling weight 24 mounted on a swinging arm 25 (see Fig. 2). The ends of the chain are brought upward and secured at 26 one near each corner of the car body.

Fixed on each chain 22 are two cross bars 27`(best shown in Figs-7 and'8) forming opposite lateral projections on the chain. When the car body is in" normal standing position said projectionsl are engaged at their to support the middle of the or almost segtendingfrom end toend of the truck frame and at each end provided with a hand lever 34 which normally rests on a supporting Vstanding position. The two lower arms 29 have their ends pointed and curved so that when they rest against the shaft 23Ia oir a hub 23c of the pulley 23 the bar 27 in its upward movement will not engage but pass over them-i In the operation of the car, when the car I is to dump a load of earth, gravel, sand,

sition under` arms 28.

rocks or other materials, the operator `raises one of the hand levers 34, so asto disengage the dogs 32 from the arms. 28 on that side of the car; while thus holding the dogs d isengaged he` gives the car body the necessary push to cause it to tip over toward the side having the dogs still engaged. They car bodyr nowrolls to the dotted line in Fig. `2 and empties out its load. When this tilting of the car body started, the fingers 27 on the chain raised Y the arms 28 of the locking members at that sideof the car into vertical position, where they are held by the arms 31 resting on the Ypeg 35. On the otherfside of the truck the fingers 27 move idlek along withthe horizontal run of the chain, and as the car body is .raised again they move to theirregular po- YDuring the latter movement the released fingers 27 return downward and, finding arms 28 in raised position pass by them, and, descending upon the now horizontal arms 29. throw the latter down to their downward position and cause the armsi28 to glide with their ends down the inclined faces 32a (see Figs. 4 and 8) of t-he dogs and thereby automatically raising the levers 34 slightly and engaging the dogs,

. and causing arm 31, to raiseto position 31x.

` wheels 10 roll on the racks Sthe car body, andthereby the load, is

VTo, dump the car to operate the levers 34 opposite from that erated.

If so desired the shafts 30 may be eX- tended all along the car truck and the levers 81V operated by hand, but this will not be necessary if thevcar body is always returned to standing position with sufiicient speed to cause levers 31 to rise from. the impetus given them by fingers 27 striking arm 29 downward.

It will be understoodthat as the cog the other: side simply at the Aside of the car just described as opcarried and dumped such. a distance beyond the track asmay be predetermined by the size of the gears. Also VthatV eachfo'ot rail V21, with hangers 20, is

by the flange 18 caused to come down in positionon the ties with the hangers vertical,

.and the opposite rail 21 can-not strike the side of the car body on account of the flange 19.

position vshown inv dumping action.

Having thus described my invention what I claim is K n f 1. A dump car having a laterally tiltable body composed of a single member of segmental termin cross section so as to hold the load when in normal position and dump it automatically when tilted to either side, said body 'having hangers pivoted one set to each side to swing to and from the same, a foot r'ailsecuredto each set of hangers and arranged to stop the tilting of the car body when the rail gets Contact with the track ony which the car stands.

2. The structure specified in claim 1 and means for limiting ther swinging movement of said hangers.` n

3. The structure specified in claim 1, said foot rail having its ends curved upward from the surface it is to contact with.

4. In a dumping car having a truck frame and a body y mounted Vthereon to tilt and dump toward either side, means for holding said body in normal position. and for re leasing it when it is to' be dumped;A said means comprising a specialrvcorner frame fixed at each of the four corners of themain truck frame, and mounted in each of said corner frames, a four-armedtiltable chain locking device, two dogsarranged to automatically engage the lockingdevice, a hand lever for disengaging thevdogs, a weighted lever on the locking device forholding it in unlocked position, a guide pulley in each corner frame,a chainektendin'g horizontally under and guided by said pulleys andV having its ends brought upward and secured to adjacent corners of the body, said chain having catches arrangedto be locked against upward movement by the upper arms of the locking devices and to raise said upper arms when they are released .from the dogs, said catches on the chains also arranged o'n their downward movement to strike the lower larms of the locking devices and thereby restorethe upper arms to locked position.

- The structure specified in claim 4 and an automaticstretching device for holding said chain stretched into guiding contact with the pulleys. l

6. The structure specified in claim 4 and two rock shafts extending one along each side of the truck frame and having secured to them al1 the locking devices and the Weighted levers of same on one side of the frame.

8. In a mechanism of the kind described,

a reciprocating chain having lateral catches by which to stop its movement, a tiltable locking device, said arms on the locking de- 10 vice having each a curved side facing the catch on the chain.

In testimony whereofl I aix my signature. f

NELS EKBERG. 

